Ultrasonic cleaner



FIG. 1 is a front, top and right perspective view of an ultrasonic cleaner showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the ultrasonic cleaner in which the design is embodied that forms no part of the claimed design. 

CLAIM The ornamental design for an ultrasonic cleaner, as shown and described. 